* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body,
html {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

small {
  margin-bottom: 15px;
}
button {
  margin-top: 10px;
  padding: 10px 20px;
}
